M80C51FB microcontroller equivalent, chmos single-chip 8-bit microcontroller.
make it an even more powerful microcontroller for applications that require Pulse Width Modulation High Speed I O and up down counting capabilities such as motor control .
that require Pulse Width Modulation High Speed I O and up down counting capabilities such as motor control or fin actuat.
VCC Supply voltage VSS Circuit ground
Port 2 Port 2 is an 8-bit bidirectional I O port with internal pullups The Port 2 output buffers can drive LS TTL inputs Port 2 pins that have 1’s written to them are pulled high by the internal pullups and in .
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